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foreign body aspiration
- 80% ==> obstructive emphysema ("air trapping")
- 20% ==> obstructive atelectasis
- <1% ==> normal aeration
- normal bronchi dilate during inspiration
- the aspirated particle acts as a one-way valve
- decubitus or inspiratory/expiratory views
Charles E. Kahn, Jr., MD - 2 February 1995
Last updated: 1 September 2006
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Medical College of Wisconsin